Extra saved game positions:
Select the "New System Data" option, then hold L1 + R1 + L2 + R2 + Select +
Start and press Circle to increase the number of saved game positions to
fifty.
Mirror tracks:
Finish in first place on all tracks. Then, press Right at the track selection
screen.
Alternate footstep sound effect:
Pause game play and press L1(2), R1(2), Down, Up, Circle.
View ending sequence:
Complete all mirror tracks, then press Select at the title screen.
Double money:
Save the game twice in different slots. Enter the bank and use the money
transfer function. Move the money from one slot to the other to double your
money.
Bonus animals:
Purchase all five kangaroos and five dinosaurs. The blank kangaroo and white
dinosaur will now be available.